title: Extrahepatic portosystemic venous shunt without portal hypertension.
abstract: A 72-year-old woman was admitted for recurrent episodes of encephalopathy. Laboratory data showed mild liver dysfunction and hyperammonemia, while she had neither anemia nor splenomegaly. The dilated inferior mesenteric vein (IMV) was opacified retrogradely from the superior mesenteric vein by superior mesenteric arteriography, and IMV was found to connect with the inferior vena cava (IVC) through a torturous shunt. No obstruction of the extrahepatic portal vein or hepatic vein was observed by arteriography. Histological evaluation of the liver biopsy indicated remarkable fatty change without cirrhosis. Finally, we diagnosed this case as extrahepatic portosystemic venous shunt without portal hypertension.
authors.affiliation: Department of Internal Medicine, Kamo Hospital, Toyota, Aichi.
authors.forename: Y
authors.initials: Y
authors.lastname: Nishimoto
authors.forename: H
authors.initials: H
authors.lastname: Hoshino
authors.forename: S
authors.initials: S
authors.lastname: Sato
authors.forename: A
authors.initials: A
authors.lastname: Oguri
authors.forename: M
authors.initials: M
authors.lastname: Yamada
authors.forename: D
authors.initials: D
authors.lastname: Nishimura
authors.forename: N
authors.initials: N
authors.lastname: Katada
authors.forename: H
authors.initials: H
authors.lastname: Sano
authors.forename: K
authors.initials: K
authors.lastname: Kato
mesh_terms: D000368:Aged; D000792:Angiography; D005260:Female; D006501:Hepatic Encephalopathy / Q000209:etiology; D006801:Humans; D006975:Hypertension, Portal; D008642:Mesenteric Veins / Q000002:abnormalities* / Q000000981:diagnostic imaging; D014682:Vena Cava, Inferior / Q000002:abnormalities* / Q000000981:diagnostic imaging